Hi ,
We are investigation whether Syaesthesia score across has a significant difference across the four groups av individuals (male/female respective high/low in opennennss to experience personality traits). This is a very small sample size just in order to try the process and we needed to exclude a part of sample where synaesthesia test has not been valid which has result that now we have only 2 participants left in one of our four groups.
My question is if it is technically possible to run a ANOVA one-way in this case? Will ANOVA accept only 2 participants in one of 4 groups?
Thank you in advance!
This was a similar question posed in 2016:
https://www.researchgate.net/post/What_is_the_minimum_sample_size_for_a_one-way_ANOVA#:~:text=The%20ANOVA%20will%20technically%20work,in%20the%20remaining%20cell%20line).
and this in 2015:
https://www.researchgate.net/post/Is_there_a_minimum_number_per_group_neccessary_for_an_ANOVA
Is this link helpful?:
https://stats.stackexchange.com/questions/129755/minimum-sample-size-for-1-way-anova
Thank you dear Mary for your kind attentive but this earlier question has been answerd more to ” what is appropriate size” ( if there is any) and whethe it will be significant result or not... but my question is purly technically what is the minimum ”n” that ANOVA one way will accept?
I think it is possible, because with two cases there should be some variance within the cell. But you should not do it. The results will be far too unstable for anyone to believe that they might generalize.
I would suggest giving up on the 2x2 ANOVA and just running two t-tests, one by sex and one by openness. Or, in the latter case, just correlating your results with openness scores.
It is sad that so many of your case protocols were invalid. Is this something you can fix? Or can you gather more participants? Because you seem to have an interesting idea and it would be a shame not to give it a real evaluation.
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